Upload or record
Start with a video, screen recording or imported media file.
Captn
SUBTITLE GENERATOR
Generate subtitles you can edit and export
Upload a video or screen recording, generate editable subtitles, clean up text and timing, then export SRT, VTT, or a captioned MP4.
Generate subtitles
Edit text + timing
SRT file
VTT file
Captioned MP4
Subtitle project
Auto subtitles ready
How it works
Generate subtitles and prepare them for publishing
Start with a video, let Captn create timed subtitle blocks, then review the transcript, timing and style before you publish.
Choose language
Select the spoken language so Captn can generate a cleaner first draft.
Generate subtitles
Create timed subtitle blocks from the spoken audio.
Review and fix
Correct words, line breaks, timing and highlights while watching the video.
Export subtitles
Download SRT, VTT or captioned video when the subtitles are ready.
Not just first-pass captions
Generate subtitles, then edit them properly
Automatic captions are a starting point. Captn lets you review the transcript, fix timing, adjust line breaks, preview styling and export real deliverables from the same project.
Start Generating- Edit every subtitle block in the browser
- Fix transcript mistakes with find and replace
- Split, merge, delete and add manual subtitle blocks
- Adjust timing on a waveform timeline
- Improve word-by-word highlight timing
- Keep preview and export aligned
SRT and VTT files
Create subtitle files from generated captions
Captn turns speech into timed captions you can review before download, so the SRT or VTT file is clean enough to upload, archive, or hand off.
SRT for upload workflows
Use SRT when you need a widely supported subtitle file for YouTube, course platforms, editors, or client delivery.
VTT for web video
Use VTT or WebVTT for browser players, replay pages, training libraries, and web-based caption tracks.
Review before export
Clean up wording, line breaks, and timing before you export, instead of shipping a raw automatic transcript.
Already have a subtitle file? Add an existing SRT or VTT to video. Need WebVTT specifically? Create a VTT file online. Need to clean up timing before export? Want more control? Use the online subtitle editor.
Export options
Export generated subtitles where you need them
Once the generated subtitles are reviewed, export the version your platform or client needs: subtitle files, captioned video or reusable project files.
Subtitle files
Download reviewed subtitles as SRT or VTT when the platform accepts a separate caption track.
Captioned MP4
Export a video with captions rendered in when viewers need the text visible by default.
Reusable project
Keep the edited subtitle project available for later timing fixes, style changes, clips, or new exports.
Caption styling
Style subtitles before you publish
Generated subtitles are only useful if they are readable. Adjust fonts, placement, colors, highlights and background before exporting the final video.
Make every subtitle line match your style.
Import subtitles
Already have subtitles? Use the SRT import workflow
If your goal is to create subtitles from video, start here. If you already have a subtitle file, import the SRT or VTT into Captn to sync, style and export it with your video.
Add SRT to VideoWorkflow examples
How creators use a subtitle generator
Use these when you are starting from speech in a source video, then finishing subtitles before publishing.
YouTube tutorial
Generate subtitles from the video, clean technical terms and timing, then export an SRT file or captioned MP4.
Course or webinar replay
Generate captions from a recording, edit the transcript, then export VTT for a web player or a captioned replay video.
Shorts and podcast clips
Generate captions from a clip, tighten line breaks and highlights, then burn captions into video for feeds.
FAQ
Questions before you generate subtitles?
Short answers about generated subtitles, subtitle files, and captioned video exports.
Can I create an SRT file from a video?
Yes. Generate subtitles from the video, review the text and timing, then export an SRT file.
Can I export VTT or WebVTT captions?
Yes. Use VTT when you need captions for web players, courses, or browser-based video pages.
Can I edit generated subtitles before export?
Yes. You can fix words, line breaks, timing, highlights, and subtitle blocks before downloading files.
Can I burn generated subtitles into an MP4?
Yes. After review, export a captioned MP4 when subtitles need to stay visible everywhere.
What if I already have an SRT or VTT file?
Use the SRT import workflow to add an existing subtitle file to your video and clean it up.
Which subtitle format should I export?
Use SRT for broad upload support, VTT for web players, and MP4 when captions must be visible in the video.
Does it work for screen recordings?
Yes. Upload a screen recording, generate subtitles from the audio, then edit and export the result.
Start a project